(function () {
  'use strict';
  const carousel = document.querySelector('.review-carousel');
  if (!carousel) return;
  const slides = Array.from(carousel.querySelectorAll('.review-slide'));
  const dots = Array.from(carousel.querySelectorAll('.review-dot'));
  const stage = carousel.querySelector('.review-carousel-stage');
  const status = carousel.querySelector('.review-carousel-status');
  const viewer = document.querySelector('.review-lightbox');
  const viewerImage = viewer.querySelector('img');
  const viewerScroll = viewer.querySelector('.review-lightbox-scroll');
  const zoomButton = viewer.querySelector('[data-review-zoom]');
  let index = 0;
  let timer;
  let inView = true;
  let returnFocus;
  let previousOverflow;
  function canPlay() {
    return inView && !document.hidden && !viewer.open;
  }
  function schedule() {
    window.clearTimeout(timer);
    if (canPlay()) timer = window.setTimeout(function () { show(index + 1); }, 5000);
  }
  function show(next, announce) {
    index = (next + slides.length) % slides.length;
    slides.forEach(function (slide, i) {
      let distance = (i - index + slides.length) % slides.length;
      if (distance > slides.length / 2) distance -= slides.length;
      const position = distance === 0 ? 'is-center' : distance === -1 ? 'is-prev' : distance === 1 ? 'is-next' : distance < 0 ? 'is-off-left' : 'is-off-right';
      slide.className = 'review-slide ' + position;
      slide.tabIndex = Math.abs(distance) <= 1 ? 0 : -1;
      slide.setAttribute('aria-hidden', Math.abs(distance) > 1 ? 'true' : 'false');
      slide.setAttribute('aria-label', 'ग्राहक की तस्वीर ' + (i + 1) + (distance === 0 ? ' बड़ी करें' : ' देखें'));
      dots[i].classList.toggle('is-active', i === index);
      dots[i].setAttribute('aria-pressed', i === index ? 'true' : 'false');
    });
    if (announce) status.textContent = 'तस्वीर ' + (index + 1) + ' / ' + slides.length;
    if (viewer.open) updateViewer();
    schedule();
  }
  function updateViewer() {
    const image = slides[index].querySelector('img');
    viewerImage.src = image.src;
    viewerImage.alt = image.alt;
    viewer.querySelector('.review-lightbox-count').textContent = 'तस्वीर ' + (index + 1) + ' / ' + slides.length;
    viewerScroll.classList.remove('is-zoomed');
    zoomButton.textContent = 'ज़ूम +';
    zoomButton.setAttribute('aria-pressed', 'false');
    viewerScroll.scrollTop = 0;
    viewerScroll.scrollLeft = 0;
  }
  function openViewer(button) {
    returnFocus = button;
    previousOverflow = document.body.style.overflow;
    updateViewer();
    viewer.showModal();
    document.body.style.overflow = 'hidden';
    schedule();
  }
  function toggleZoom() {
    const zoomed = viewerScroll.classList.toggle('is-zoomed');
    zoomButton.textContent = zoomed ? 'ज़ूम −' : 'ज़ूम +';
    zoomButton.setAttribute('aria-pressed', String(zoomed));
  }
  slides.forEach(function (slide, i) {
    slide.addEventListener('click', function () {
      if (i === index) openViewer(slide);
      else show(i, true);
    });
  });
  dots.forEach(function (dot, i) { dot.addEventListener('click', function () { show(i, true); }); });
  carousel.querySelector('[data-review-prev]').addEventListener('click', function () { show(index - 1, true); });
  carousel.querySelector('[data-review-next]').addEventListener('click', function () { show(index + 1, true); });
  carousel.addEventListener('keydown', function (event) {
    if (event.key === 'ArrowLeft' || event.key === 'ArrowRight') {
      event.preventDefault();
      show(index + (event.key === 'ArrowRight' ? 1 : -1), true);
    }
  });
  let start;
  let swiped = false;
  stage.addEventListener('pointerdown', function (event) { start = { x: event.clientX, y: event.clientY }; swiped = false; });
  stage.addEventListener('pointerup', function (event) {
    if (!start) return;
    const dx = event.clientX - start.x;
    const dy = event.clientY - start.y;
    start = null;
    if (Math.abs(dx) > 35 && Math.abs(dx) > Math.abs(dy)) {
      swiped = true;
      show(index + (dx < 0 ? 1 : -1), true);
    }
  });
  stage.addEventListener('pointercancel', function () { start = null; });
  stage.addEventListener('click', function (event) {
    if (swiped) { event.preventDefault(); event.stopImmediatePropagation(); swiped = false; }
  }, true);
  viewer.querySelector('[data-review-close]').addEventListener('click', function () { viewer.close(); });
  viewer.querySelector('[data-review-lightbox-prev]').addEventListener('click', function () { show(index - 1, true); });
  viewer.querySelector('[data-review-lightbox-next]').addEventListener('click', function () { show(index + 1, true); });
  zoomButton.addEventListener('click', toggleZoom);
  viewerImage.addEventListener('click', toggleZoom);
  viewer.addEventListener('click', function (event) { if (event.target === viewer) viewer.close(); });
  viewer.addEventListener('close', function () {
    document.body.style.overflow = previousOverflow;
    if (returnFocus) returnFocus.focus({ preventScroll: true });
    schedule();
  });
  viewer.addEventListener('keydown', function (event) {
    if (event.key === 'ArrowLeft' || event.key === 'ArrowRight') {
      event.preventDefault();
      show(index + (event.key === 'ArrowRight' ? 1 : -1), true);
    }
  });
  document.addEventListener('visibilitychange', schedule);
  if ('IntersectionObserver' in window) {
    new IntersectionObserver(function (entries) { inView = entries[0].isIntersecting; schedule(); }, { threshold: 0.15 }).observe(carousel);
  }
  show(0);
})();